[feature] Clean/remove /tmp/playwright-artifacts-* after executing browsersteps or chrome playwright page fetching

This turns out to be a lot of files eventually

Maybe playwright will tell us what the random ID was, OR we can remove those who are more than an hour old?

```
/28d86b6b6d1ca7d7c3cdeaa0b9985bc3e876953e29ef681cba1de033e14ab4c7/diff/tmp/playwright-artifacts-XXXXXX9ATK8t
./28d86b6b6d1ca7d7c3cdeaa0b9985bc3e876953e29ef681cba1de033e14ab4c7/diff/tmp/playwright-artifacts-XXXXXXcwhLWN
./28d86b6b6d1ca7d7c3cdeaa0b9985bc3e876953e29ef681cba1de033e14ab4c7/diff/tmp/playwright-artifacts-XXXXXXoz0aR6
./28d86b6b6d1ca7d7c3cdeaa0b9985bc3e876953e29ef681cba1de033e14ab4c7/diff/tmp/playwright-artifacts-XXXXXXtnBrAC
./28d86b6b6d1ca7d7c3cdeaa0b9985bc3e876953e29ef681cba1de033e14ab4c7/diff/tmp/playwright-artifacts-XXXXXXtidcWn
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXXFyQVf2
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXX8RRdxa
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXX83dt3V
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXXJgRKBR
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXXzjnOvH
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXXJv1f3H
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXXOyKOpZ
./b680e1bfd8064908b6d42adc14324539ea8bddf396ed34df17872cb988d1e3e9/diff/tmp/playwright-artifacts-XXXXXX3mbBHx
```

Locate the code that executes browsersteps or fetches pages through Chrome Playwright, then trace where /tmp/playwright-artifacts-* directories are created. Determine whether the cleanup should happen after execution or remove directories older than an hour; done means temporary artifact directories no longer accumulate while needed artifacts remain available.

Written by the indexing model from the issue text.